Descriptions of weather stations: The first station operated by the U of A is the East Station and is located at latitude 34.464 N, longitude 91.401 W. The second station is operated by the USDA Agricultural Research Service and is the West Station located at latitude 34.469 N, and longitude 91.420 W. The stations have temperature, relative humidity, wind speed and direction, solar radiation, and soil temperature at a 2-inch depth. The east station also has soil temperature at a 5-inch depth.